Cleveland C14731 1/2 in Cobalt Screw Machine Drill Bit

Product Description

The CLEVELAND C14731 is a cobalt screw machine length drill bit designed for high-performance drilling in tough materials. At 1/2 inch in diameter with a 135-degree split point and web-thinned tip, it starts fast and cuts cleanly without walking. The M42 cobalt construction handles the heat generated in alloy steel and aluminum applications where standard HSS bits fail prematurely. Built to Series 2133 specs, this is a production-grade tool suited for machine shop use, maintenance drilling, and fabrication work. Licensed machinists, millwrights, pipefitters, and industrial mechanics are the primary users.

The C14731 is built for drilling alloy steels and aluminum in screw machine, drill press, and CNC setup applications. The shorter overall length of 3.75 inches improves rigidity and reduces deflection in tight workpiece clearances. The straight cylindrical shank seats securely in standard 1/2 inch chucks. Two-flute spiral construction promotes chip evacuation during through-hole and blind-hole operations. This bit is well suited to production environments where consistent hole tolerance and tool life matter.

Key Features

• M42 cobalt construction for extended tool life in alloy and aluminum drilling
• 135-degree split point with web thinning for self-centering entry and reduced thrust
• Screw machine length body (3.75 inches OAL) provides rigidity and reduces chatter
• Right-hand cut with regular spiral and 2-flute configuration for efficient chip removal
• Straight cylindrical shank fits standard 1/2 inch drill chucks and collets
• Meets ASME B94.11M and DIN 1897 dimensional standards

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit compatible with standard 1/2 inch straight-shank drill chucks on drill presses, CNC machining centers, and screw machines. Primary workpiece materials listed by the manufacturer are alloy steel and aluminum.

Installation Notes

Install into a properly sized chuck or collet and tighten securely before operation. Ensure the workpiece is clamped and the spindle speed is set appropriately for the material and bit diameter before starting. Cutting fluid or coolant is recommended for alloy steel drilling to extend tool life, even though this bit does not feature through-coolant capability. Inspect the cutting edges before each use and replace if chipping or dullness is observed.